libgomp/doc/enabling-openacc.rst

   1 ..
   2   Copyright 1988-2022 Free Software Foundation, Inc.
   3   This is part of the GCC manual.
   4   For copying conditions, see the copyright.rst file.
   5
   6 .. _enabling-openacc:
   7
   8 Enabling OpenACC
   9 ----------------
  10
  11 To activate the OpenACC extensions for C/C++ and Fortran, the compile-time
  12 flag :option:`-fopenacc` must be specified.  This enables the OpenACC directive
  13 ``#pragma acc`` in C/C++ and ``!$acc`` directives in free form,
  14 ``c$acc``, ``*$acc`` and ``!$acc`` directives in fixed form,
  15 ``!$`` conditional compilation sentinels in free form and ``c$``,
  16 ``*$`` and ``!$`` sentinels in fixed form, for Fortran.  The flag also
  17 arranges for automatic linking of the OpenACC runtime library
  18 (:ref:`openacc-runtime-library-routines`).
  19
  20 See https://gcc.gnu.org/wiki/OpenACC for more information.
  21
  22 A complete description of all OpenACC directives accepted may be found in
  23 the `OpenACC <https://www.openacc.org>`_ Application Programming
  24 Interface manual, version 2.6.